Methyl Sulfonyl Methane (MSM) CAS NO.67-71-0

INSPECTION ITEMS

PRODUCT STANDARD

INSPECTION RESULT

TEST METHOD

Purity % 

>99.90

99.95

USP32, page 1053(GC)

DMSO Content %

≤0.01

0

USP32, page 1053(GC)

Appearance

White Crystalline 

White Crystalline

Odor

Odorless

Odorless

Melting Point@760mmHg

108℃+/-1℃

108.6

USP31

Bulk Densityg/ml

>0.65

0.68

Water Content%

<0.20

0.16

BP Appendix IX

C;determined on 0.5g

Total Heavy Metals： ppm

<3

<3

BP

              As ppm

<0.1

<0.1

BP

              Cd ppm

<0.1

<0.1

BP

              Hg ppm

<0.1

<0.1

BP

              Pbppm

<1

<1

BP

Residue on Ignition% 

<0.20

<0.01

USP32, page 1053

Coliform(CFU/g) 

Negative

Negative

BP

E.Coli(CFU/g) 

Negative

Negative

BP

Yeast/Mold(CFU/g) 

<10

<10

BP

Salmonella 

Negative

Negative

BP

Standard Aerobic Plate Count(CFU/g) 

<10

<10

BP

Total Aerobic Bacterial Count 

<1000

<1000

BP

Particle Size 

60-80Mesh

Conform